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Nuclear Grade Hafnium vs. EN 1.4980 Stainless Steel

Nuclear grade hafnium belongs to the otherwise unclassified metals classification, while EN 1.4980 stainless steel belongs to the iron alloys. There are 17 material properties with values for both materials. Properties with values for just one material (16, in this case) are not shown.

For each property being compared, the top bar is nuclear grade hafnium and the bottom bar is EN 1.4980 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 78
190
Elongation at Break, % 25
17
Poisson's Ratio 0.26
0.29
Shear Modulus, GPa 31
75
Tensile Strength: Ultimate (UTS), MPa 350
1030
Tensile Strength: Yield (Proof), MPa 170
680

Thermal Properties

Latent Heat of Fusion, J/g 130
300
Specific Heat Capacity, J/kg-K 140
470
Thermal Expansion, µm/m-K 5.9
17

Otherwise Unclassified Properties

Density, g/cm3 13
7.9

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 73
150
Resilience: Unit (Modulus of Resilience), kJ/m3 180
1180
Stiffness to Weight: Axial, points 3.3
14
Stiffness to Weight: Bending, points 11
24
Strength to Weight: Axial, points 7.4
36
Strength to Weight: Bending, points 8.4
28
Thermal Shock Resistance, points 55
22

Alloy Composition

Aluminum (Al), % 0
0 to 0.35
Boron (B), % 0
0.0030 to 0.010
Carbon (C), % 0
0.030 to 0.080
Chromium (Cr), % 0
13.5 to 16
Hafnium (Hf), % 99.8 to 100
0
Iron (Fe), % 0
49.2 to 58.5
Manganese (Mn), % 0
1.0 to 2.0
Molybdenum (Mo), % 0
1.0 to 1.5
Nickel (Ni), % 0
24 to 27
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0
1.9 to 2.3
Vanadium (V), % 0
0.1 to 0.5
Residuals, % 0 to 0.23
0